Filter.



No. 821,442. PATENTBD MAY 22, 1906. S. B. STEWART.

FILTER.

APPLIOATION FILED PIBB.14,1905.

' HIHWIZ JIHMEI;

lllllwl 3' INVEN Ton UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented May 22, 1906.

Application filed February 14, 1905. Serial No. 245,596.

To all whom it may concern:

Be it known that I, SAMUEL B. STEWART, a citizen of the United States,residing at New Orleans, in the parish of Orleans and State ofLouisiana, have invented certain new and useful Improvements in Filters,of which the following is a specification.

My invention relates to improvements in filters; and theobject of myinvention is the provision of a filter adapted to be attached to theusual spigot or supply-pipe under the pressure of the main of thewaterworks and which will have a large capacity for filtering the waterand which Wlll have means for cleaning the filter without removing it ordetaching any of its parts, the mechanism embodying the simplest,cheapest, and most practical construction.

To attain the desired object, my invention consists of a filter embodyinnovel features of construction and combination of parts substantially asdisclosed herein.

Figure 1 represents a sectional view of my filter. Fig. 2 represents atop plan view of the cleaning device, and Fig. 3 represents an enlargedside elevation of the cleaning device detached.

In the drawings the letter H represents the shell or casing of myfilter, which is supported upon a base H, and this casing is providedwith the central discharge-op ening J for discharging the filteredmaterial to the pipe N and with the inlet J, and upon the central pipe Jis mounted the filtering-stone S, to the upper end of which pipe isconnected or formed the stem M to receive the handle M. The casing isalso provided with a flushing outlet-pipe O and with a small cook orfaucet K. Mounted on the stem M and above the ends of thefiltering-stone are the cross-heads A and B, to which are connected theside vertical strips G, and to one of said strips is secured the curvedplates E, the inner or free ends of which are connected to thescrapingplate or cleaner C, which scraper is held normally in contactwith the filtering-stone by means of the spring F, connected to each endof the scraper and always exerting their ten- .sion to hold the scraperin contact with the face of the filter-stone.

In operation the water enters the casing, passes through thefilter-stone, and is discharged at the lower portion J through pipe N,and when desired to clean the filter-stone it is simply necessary toturn the crank which revolves the scraper against the surface of thestone and entirely removes all sediment or slime from the stone, and thewater flushes and carries off such sediment or slime, as will beunderstood. It is evident that I provide a filter which will perform thefunction of filtering in a thorough manner and which can be quicklycleaned without in any manner affecting the interior mechanism.

I clairn In afilter, the combination With a casing, an inlet and anoutlet near the top of said casing, said inlet and outlet provided withvalves or cocks, a base portion upon which the casing rests having acentral depending ring forming a chamber, a cap or covering for saidchamber, a water-discharge pipe leading from said chamber, aflushing-outlet on one side of the base, a central discharge-piperegistering with said discharge-chamber, a stone rigidly mounted on saidpipe, a stem rotatably mounted centrally in the top of the casing, ahandle on said stem, a frame mounted on said stem and consisting of anupper and lower head or cross-piece having angular ends, flat verticalconnecting-bars secured to said angular ends, a series of fiat segmentalcurved spring-arms having one end secured to the said verticalconnecting-bars, an angle-bar connected to the free ends of said curvedspring-arms, a vertical scraper-bar connected to one face of theangle-bar, and a pair of coiled springs each having one end connected tothe scraperbar and their other ends connected to the upper and lowerheads of the frame.

In testimony whereof I affix my signature in presence of two witnesses.

SAMUEL B. STEWART.

Witnesses:

AUG. CI-IABAUD, R. MARI.

